Viessmann AWT 221.A04, Installation And Service Instructions For Contractors

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Type AWT/AWT-AC 221.A04 221.A05 221.A07 221.A10 221.A13
Heating water (secondary cir-
cuit)
Content l 16.7 16.7 16.7 17.7 17.7
Minimum flow rate (must be
maintained) l/h 750 1000 1000 1600 1600
Minimum volume in the heating
system (cannot be fitted with
shut-off devices) l 25 50 50 50 50
Max. external pressure drop
(RFH) at minimum flow rate mbar 450 400 400 450 450
kPa 45 40 40 45 45
Max. flow temperature °C 55 55 55 55 55
External unit electrical values
■
Rated voltage, compressor 1/N/PE 230 V/50 Hz
■
Max. operating current, com-
pressor A 13.5 15.7 15.7 19.6 26.5
■
Starting current, compressor A 10.5 15 15 10 10
■
Starting current, compressor
with stalled armature A 20 25 25 25 32
■
MCB/fuse protection A 16 16 16 20 32
■
IP rating IP X4 X4 X4 X4 X4
Internal unit electrical values
Heat pump control unit/PCB
■
Rated voltage, control
unit/PCB 1/N/PE 230 V/50 Hz
■
MCB/fuse protection, power
supply 1 x B16A
■
Internal fuse 6.3 A (slow)/250 V
Instantaneous heating water
heater
■
Rated voltage 1/N/PE 230 V/50 Hz
3/N/PE 400 V/50 Hz
■
Heating output kW 8.8
■
MCB/fuse protection, power
supply 3 x B16A
Electrical power consumption
■
Fan (max.) W 65 70 70 130 130
■
External unit (max.) kW 3.0 3.6 3.6 4.6 5.8
■
Secondary pump (PWM) W 3 to 50 3 to 50 3 to 50 3 to 70 3 to 70
■
Control unit/PCB, external unit
(max.) W 150 150 150 150 150
■
Control unit/PCB, internal unit
(max.) W 5 5 5 5 5
■
Max. rating, control unit/PCB W 1000 1000 1000 1000 1000
Specification
Specification
(cont.)
5776 028 GB
Appendix